Mailgun vs Twilio SendGrid
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Twilio SendGrid is the stronger AI pick in Email Marketing: it has a visibility score of 4.9 versus 0.9 for Mailgun, and ranks ahead in 100% of the answers that name both.
Choose Mailgun if…
- You need ISO/IEC 27001 or ISO 27701 or GDPR compliant or HIPAA compliant or PCI-compliant SAQ-A merchant coverage
- recommended for sending larger volumes programmatically
Choose Twilio SendGrid if…
- You want the brand AI engines rank higher (4.9 vs 0.9)
- You need ISO 27001 or ISO 27018 coverage
- You prefer a larger, established vendor (5,000+ employees)
- Cuts overall costs by 10% to 20% with a yearly commitment
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Mailgun | Twilio SendGrid |
|---|---|---|
| Visibility score | 0.9% | 4.9% |
| Change vs last week | New | New |
| Rank in Email Marketing | #36 | #17 |
| Share of voice | 0.2% | 1.6% |
| Mentions this run | 1 | 8 |
| Positive in AI answers | 0% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Mailgun 0pp · Twilio SendGrid 0pp over 0 weekly runs.
Engine by engine
Twilio SendGrid leads on 3 of 3 engines
Head to head in AI answers
1 engine answers name both brands
| Prompt | Engine | Mailgun | Twilio SendGrid |
|---|---|---|---|
| How do companies send and measure email campaigns without a dedicated tool? | ChatGPT | #3 | #2 |
Features, pricing & fit
| Dimension | Mailgun | Twilio SendGrid |
|---|---|---|
| Pricing model | Usage-based | — |
| Entry price | Free; paid from $15 / mo | — |
| Free plan | Yes | — |
| Deployment | Cloud, hosted in US and EU regions | Cloud |
| Compliance | SOC 2 Type II, ISO/IEC 27001, ISO 27701, GDPR compliant, HIPAA compliant, PCI-compliant SAQ-A merchant | ISO 27001, ISO 27018, SOC 2 Type II |
| Support | Knowledge Center, Documentation, Ticket support, Chat support on higher plans | Live chat for paid support customers, starting October 5, 2026 |
| Founded | 2010 | — |
| Employees | 201–500 | 5,000+ |
| Funding | Growth investment (Thoma Bravo) · $51M raised | Series A |
| Best for | Developers and engineering teams that need to send transactional and marketing email through an API | — |
Plans side by side
Mailgun
Twilio SendGrid
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
Mailgun
- recommended for sending larger volumes programmatically
Twilio SendGrid
- Cuts overall costs by 10% to 20% with a yearly commitment
- Reliable for transactional email
- Suited to sending large email volumes programmatically
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Mailgun vs Twilio SendGrid”, https://slateindex.ai/compare/mailgun-vs-twilio-sendgrid, data of Nov 2, 2026. Licence: CC BY 4.0.